diff --git a/config/web/index.html b/config/web/index.html
index 155aaca..32c56cc 100644
--- a/config/web/index.html
+++ b/config/web/index.html
@@ -70,7 +70,6 @@
 <script>
 (function() {
   I18n.init();
-  SignalStore.restore();
   document.getElementById('lang-select').value = I18n.current;
   document.getElementById('nav-version').textContent = I18n.t('app.version');
   document.getElementById('nav-title').textContent = I18n.t('app.title');
@@ -87,10 +86,12 @@
     if (!data || typeof data !== 'object') return;
     MonitorRing.push('↓', JSON.stringify(data).substring(0, 200));
 
-    if (data.out || data.in || data.yk || data.ao || data.param) {
+    if (data.type === 'dc_data') {
+      if (typeof DcPage !== 'undefined' && DcPage.onDcData) DcPage.onDcData(data);
+      return;
+    }
+    if (data.out || data.yk || data.ao || data.param) {
       SignalStore.update(data);
-      var sigPages = ['#out','#in','#yk','#ao','#param','#datacenter','#plc_debug'];
-      if (sigPages.indexOf(Router.currentHash) >= 0) Router.dispatch(Router.currentHash);
     }
     /* ---- 命令列表：渲染到终端面板 ---- */
     if (data.type === 'cmd_list' && data.cmds) {
diff --git a/config/web/js/i18n.js b/config/web/js/i18n.js
index 20be471..f802a40 100644
--- a/config/web/js/i18n.js
+++ b/config/web/js/i18n.js
@@ -36,7 +36,6 @@ var I18n = {
 			'nav.section.tools':      '工具',
 			'nav.dashboard':     '仪表盘',
 			'nav.out':           '开出信号',
-			'nav.in':            '开入信号',
 			'nav.yk':            '遥控信号',
 			'nav.ao':            '参数设置',
 			'nav.param':         '定值管理',
@@ -65,7 +64,6 @@ var I18n = {
 			'dash.url':            '地址',
 			'dash.status':         '状态',
 			'dash.out.desc':       '开出信号注册',
-			'dash.in.desc':        '开入信号链接',
 			'dash.yk.desc':        '遥控信号管理',
 			'dash.ao.desc':        '模拟输出参数',
 			'dash.param.desc':     '定值区参数',
@@ -84,7 +82,6 @@ var I18n = {
 			'signal.saddr':      '信号地址',
 			'signal.desc':       '描述',
 			'signal.type':       '数据类型',
-			'signal.link':       '链接目标',
 			'signal.ctrl':       '控制类型',
 			'signal.ctrl_direct': '直控',
 			'signal.ctrl_sbo':    '选控 (SBO)',
@@ -153,6 +150,7 @@ var I18n = {
 			'plc_config.help': '点击节点选中 | 拖拽移动 | 点击输出圆点→点击输入圆点连线 | 滚轮缩放 | 拖拽空白区平移',
 
 			/* Toast */
+			'toast.val_required':  '请输入值',
 			'toast.ws_error':     'WebSocket 未连接',
 			'toast.saddr_required': '信号地址不能为空',
 			'toast.add_sent':     '添加请求已发送',
@@ -189,7 +187,6 @@ var I18n = {
 			'nav.section.tools':      'Tools',
 			'nav.dashboard':     'Dashboard',
 			'nav.out':           'Out Signals',
-			'nav.in':            'In Signals',
 			'nav.yk':            'YK Controls',
 			'nav.ao':            'AO Parameters',
 			'nav.param':         'Param Settings',
@@ -218,7 +215,6 @@ var I18n = {
 			'dash.url':            'URL',
 			'dash.status':         'Status',
 			'dash.out.desc':       'Output signal registrations',
-			'dash.in.desc':        'Input signal links',
 			'dash.yk.desc':        'Remote control signals',
 			'dash.ao.desc':        'Analog output parameters',
 			'dash.param.desc':     'Setting zone parameters',
@@ -237,7 +233,6 @@ var I18n = {
 			'signal.saddr':      'Signal Address',
 			'signal.desc':       'Description',
 			'signal.type':       'Data Type',
-			'signal.link':       'Link Target',
 			'signal.ctrl':       'Control Type',
 			'signal.ctrl_direct': 'Direct',
 			'signal.ctrl_sbo':    'SBO',
@@ -305,6 +300,7 @@ var I18n = {
 			'plc_config.help': 'Click node to select | Drag to move | Click output pin → input pin to wire | Scroll to zoom | Drag empty area to pan',
 
 			/* Toast */
+			'toast.val_required':  'Value required',
 			'toast.ws_error':     'WebSocket not connected',
 			'toast.saddr_required': 'Signal address is required',
 			'toast.add_sent':     'Add request sent',
diff --git a/config/web/js/pages/dashboard.js b/config/web/js/pages/dashboard.js
index e7a68fd..76aafca 100644
--- a/config/web/js/pages/dashboard.js
+++ b/config/web/js/pages/dashboard.js
@@ -7,7 +7,6 @@
 Router.register('#dashboard', function(c) {
 	var types = [
 		{ t: 'out',   key: 'nav.out',   descKey: 'dash.out.desc',   color: 'var(--accent)' },
-		{ t: 'in',    key: 'nav.in',    descKey: 'dash.in.desc',    color: 'var(--accent2)' },
 		{ t: 'yk',    key: 'nav.yk',    descKey: 'dash.yk.desc',    color: 'var(--warning)' },
 		{ t: 'ao',    key: 'nav.ao',    descKey: 'dash.ao.desc',    color: 'var(--success)' },
 		{ t: 'param', key: 'nav.param', descKey: 'dash.param.desc', color: '#a78bfa' },
@@ -16,7 +15,7 @@ Router.register('#dashboard', function(c) {
 	var cards = types.map(function(t) {
 		var count = SignalStore.get(t.t).length;
 		return '<div class="dash-card" onclick="window.location.hash=\'#' + t.t + '\'">'
-			+ '<div class="dash-card-icon">' + Icon.get(t.icon === 'out' ? 'signal' : t.icon === 'in' ? 'link' : t.icon === 'yk' ? 'zap' : t.icon === 'ao' ? 'sliders' : 'settings') + '</div>'
+			+ '<div class="dash-card-icon">' + Icon.get(t.t === 'out' ? 'signal' : t.t === 'yk' ? 'zap' : t.t === 'ao' ? 'sliders' : 'settings') + '</div>'
 			+ '<div class="dash-card-count">' + count + '</div>'
 			+ '<div class="dash-card-label">' + I18n.t(t.key) + '</div>'
 			+ '<div style="font-size:11px;color:var(--text-muted);margin-top:4px;">' + I18n.t(t.descKey) + '</div>'
@@ -51,7 +50,7 @@ Router.register('#dashboard', function(c) {
 
 var DashActions = {
 	exportAll: function() {
-		var types = ['out', 'in', 'yk', 'ao', 'param'];
+		var types = ['out', 'yk', 'ao', 'param'];
 		var xml = '<?xml version="1.0" encoding="UTF-8"?>\n<root>\n';
 		var hasData = false;
 		types.forEach(function(st) {
@@ -88,7 +87,7 @@ var DashActions = {
 				var count = 0;
 				nodes.forEach(function(el) {
 					var type = el.getAttribute('type');
-					if (['out', 'in', 'yk', 'ao', 'param'].indexOf(type) === -1) return;
+					if (['out', 'yk', 'ao', 'param'].indexOf(type) === -1) return;
 					el.querySelectorAll('signal').forEach(function(sig) {
 						var saddr = sig.getAttribute('saddr');
 						if (!saddr || !saddr.trim()) return;
diff --git a/config/web/js/pages/datacenter.js b/config/web/js/pages/datacenter.js
index 2a48f75..8bfd973 100644
--- a/config/web/js/pages/datacenter.js
+++ b/config/web/js/pages/datacenter.js
@@ -1,6 +1,6 @@
 /**
  * @file    datacenter.js
- * @brief   RTU_ALL_AI 数据中心 — 搜索过滤 + 复选框 + 批量添加到配置页
+ * @brief   RTU_ALL_AI 数据中心 — 结构化 JSON 数据 + 搜索过滤 + 批量添加
  */
 Router.register('#datacenter', function(c) { DcPage.render(c); });
 
@@ -37,8 +37,8 @@ var DcPage = (function() {
 	}
 
 	function renderTabs() {
-		var types = ['out', 'in', 'yk', 'ao', 'param'];
-		var labels = { out: '注册 (out)', in: '链接注册 (in)', yk: '遥控 (yk)', ao: '参数 (ao)', param: '定值 (param)' };
+		var types = ['out', 'yk', 'ao', 'param'];
+		var labels = { out: '注册 (out)', yk: '遥控 (yk)', ao: '参数 (ao)', param: '定值 (param)' };
 		var el = document.getElementById('dc-tab-bar');
 		if (!el) return;
 		var h = '';
@@ -80,10 +80,10 @@ var DcPage = (function() {
 		var thEl = document.getElementById('dc-thead');
 		if (thEl) thEl.innerHTML = '<th style="width:36px"><input type="checkbox" id="dc-cb-all"'
 			+ (allChk ? ' checked' : '') + ' onchange="DcPage._toggleAll()"></th>'
-			+ '<th>id</th><th>saddr</th><th>desc</th><th>val</th><th>type</th><th>ctrl</th><th>link</th>';
+			+ '<th>id</th><th>saddr</th><th>desc</th><th>type</th>';
 
 		if (data.length === 0) {
-			tbody.innerHTML = '<tr class="empty-row"><td colspan="8">' + I18n.t('dc.no_signal') + '</td></tr>';
+			tbody.innerHTML = '<tr class="empty-row"><td colspan="5">' + I18n.t('dc.no_signal') + '</td></tr>';
 			return;
 		}
 
@@ -95,68 +95,36 @@ var DcPage = (function() {
 				+ '<td class="cell-mono">' + fmtVal(x.id) + '</td>'
 				+ '<td class="cell-mono">' + esc(x.saddr) + '</td>'
 				+ '<td>' + esc(x.desc || '') + '</td>'
-				+ '<td class="cell-val">' + fmtVal(x.val) + '</td>'
 				+ '<td class="cell-mono">' + esc(x.type || '') + '</td>'
-				+ '<td class="cell-mono">' + (x.ctrl_type == 1 ? 'SBO' : 'Direct') + '</td>'
-				+ '<td>' + esc(x.link_saddrs || '') + '</td></tr>';
+				+ '</tr>';
 		});
 		tbody.innerHTML = h;
 	}
 
-	function parseDcOutput(text) {
-		if (!text || text.length < 10) return;
-		var types = ['out', 'in', 'yk', 'ao', 'param'], currentType = '';
-		var lines = text.split('\n');
-		lines.forEach(function(line) {
-			types.forEach(function(t) {
-				if (line.indexOf(t + ' signals:') >= 0) currentType = t;
+	/**
+	 * @brief 从后端 dc_data JSON 加载信号列表 (替代文本解析)
+	 */
+	function loadFromDcData(dc) {
+		allData = {};
+		['out', 'yk', 'ao', 'param'].forEach(function(t) {
+			if (!dc[t] || !Array.isArray(dc[t])) return;
+			allData[t] = dc[t].map(function(s) {
+				return {
+					id: s.id, saddr: s.saddr || '', desc: s.desc || '',
+					type: s.type || '', ctrl_type: s.ctrl_type || 0,
+					link_saddrs: s.link_saddrs || ''
+				};
 			});
-			if (!currentType) return;
-			if (line.indexOf('---') >= 0 || line.indexOf('saddr') >= 0 || line.indexOf(' id ') >= 0) return;
-			var trimmed = line.trim();
-			if (!trimmed) return;
-			var parts = trimmed.split(/\s+/);
-			if (parts.length < 4) return;
-			var item = {};
-			if (currentType === 'param') {
-				item = { id: parseInt(parts[0]), saddr: parts[1], desc: parts[2], type: parts[3] || '', ctrl_type: parseInt(parts[4]) || 0 };
-			} else if (currentType === 'in') {
-				item = { id: parseInt(parts[0]), saddr: parts[1], desc: parts[2], link_saddrs: parts[3] || '', type: parts[4] || '', val: parts[5] || '' };
-			} else {
-				item = { id: parseInt(parts[0]), saddr: parts[1], desc: parts[2], type: parts[3] || '', val: parts[4] || '' };
-			}
-			allData[currentType] = allData[currentType] || [];
-			allData[currentType].push(item);
 		});
 		DcPage._renderTable();
 		toast(I18n.t('dc.refreshed'), 'success');
 	}
 
 	function refreshAll() {
-		allData = { out: [], in: [], yk: [], ao: [], param: [] };
+		allData = { out: [], yk: [], ao: [], param: [] };
 		toast(I18n.t('dc.querying'), 'info');
-		var buf = '', timer = null, done = false;
-		var handler = function(data, binary) {
-			if (binary) {
-				buf += new TextDecoder().decode(binary);
-				clearTimeout(timer);
-				timer = setTimeout(function() {
-					if (done) return; done = true;
-					WsClient.msgCbs = WsClient.msgCbs.filter(function(cb) { return cb !== handler; });
-					parseDcOutput(buf);
-				}, 600);
-			}
-		};
-		WsClient.msgCbs.unshift(handler);
+		/* 发送 datacenter all 命令，后端会在响应中附加 dc_data JSON */
 		WsClient.send({ type: 'cmd', data: 'datacenter all' });
-		/* 兜底超时, 但只在 600ms 定时器未触发时生效 */
-		setTimeout(function() {
-			if (buf && !done) {
-				done = true;
-				WsClient.msgCbs = WsClient.msgCbs.filter(function(cb) { return cb !== handler; });
-				parseDcOutput(buf);
-			}
-		}, 6000);
 	}
 
 	return {
@@ -176,13 +144,14 @@ var DcPage = (function() {
 				+ '<span class="dc-sel-label" id="dc-sel-label"></span>'
 				+ '<button class="btn btn-primary btn-sm" onclick="DcPage._addSelected()">' + I18n.t('dc.add_to_config') + '</button>'
 				+ '</div>'
-				+ '<div class="table-wrap"><table class="signal-table">'
+				+ '<div class="table-wrap"><table class="signal-table dc-table">'
 				+ '<thead id="dc-thead"></thead>'
 				+ '<tbody id="dc-tbody"></tbody>'
 				+ '</table></div></div>';
 			renderTabs();
 			renderTable();
 		},
+		onDcData: loadFromDcData,
 		refreshAll: refreshAll,
 		switchTab: function(t) {
 			activeTab = t; searchText = ''; selectedSet = {};
diff --git a/config/web/js/pages/signals.js b/config/web/js/pages/signals.js
index f273b4f..1092ad8 100644
--- a/config/web/js/pages/signals.js
+++ b/config/web/js/pages/signals.js
@@ -1,68 +1,23 @@
 /**
  * @file    signals.js
- * @brief   信号管理页面 — out / in / yk / ao (统一渲染)
+ * @brief   信号管理页面 — out / yk / ao (统一渲染, 标准列: # | saddr | desc | type | val | [ctrl] | 操作)
  */
 
-
-/* ---- Out ---- */
+/* ---- Out: 开出信号 (带复选框用于批量删除) ---- */
 Router.register('#out', function(c) {
-	c.innerHTML = renderSignalPage('out',
-		['<input type="checkbox" style="pointer-events:none;opacity:0">', I18n.t('signal.saddr'), I18n.t('signal.desc'), I18n.t('signal.type')],
-		function(s) { return td(esc(s.type || '?'), 'cell-mono'); },
-		function(s) {
-			return '<div class="btn-group">'
-				+ '<button class="btn btn-sm" onclick="SignalActions.set(\'out\',\'' + esc(s.saddr) + '\')">' + Icon.get('edit') + ' ' + I18n.t('signal.set') + '</button>'
-				+ '<button class="btn btn-danger btn-sm" onclick="SignalActions.del(\'out\',\'' + esc(s.saddr) + '\')">' + Icon.get('trash') + '</button>'
-				+ '</div>';
-		}
-	);
-	[].slice.call(document.querySelectorAll('#tbody-out tr')).forEach(function(tr) {
-		var saddr = (tr.querySelector('.cell-mono') || {}).textContent || '';
-		tr.dataset.saddr = saddr;
-		tr.querySelector('td:first-child').innerHTML = '<input type="checkbox">';
-	});
+	c.innerHTML = renderSignalPage('out', true, null, null);
 });
 
-/* ---- In ---- */
-Router.register('#in', function(c) {
-	c.innerHTML = renderSignalPage('in',
-		['<input type="checkbox" style="pointer-events:none;opacity:0">', I18n.t('signal.saddr'), I18n.t('signal.desc'), I18n.t('signal.link'), I18n.t('signal.type')],
-		function(s) { return td(esc(s.link_saddr || '\u2014'), 'cell-mono') + td(esc(s.type || '?'), 'cell-mono'); },
-		function(s) {
-			return '<button class="btn btn-danger btn-sm" onclick="SignalActions.del(\'in\',\'' + esc(s.saddr) + '\')">' + Icon.get('trash') + '</button>';
-		}
-	);
-	[].slice.call(document.querySelectorAll('#tbody-in tr')).forEach(function(tr) {
-		var saddr = (tr.querySelector('.cell-mono') || {}).textContent || '';
-		tr.dataset.saddr = saddr;
-		tr.querySelector('td:first-child').innerHTML = '<input type="checkbox">';
-	});
-});
-
-/* ---- YK ---- */
+/* ---- YK: 遥控信号 (带控制类型列) ---- */
 Router.register('#yk', function(c) {
-	c.innerHTML = renderSignalPage('yk',
-		[I18n.t('signal.saddr'), I18n.t('signal.desc'), I18n.t('signal.type'), I18n.t('signal.ctrl')],
-		function(s) { return td(esc(s.type || '?'), 'cell-mono') + td(s.ctrl_type == 1 ? I18n.t('signal.ctrl_sbo') : I18n.t('signal.ctrl_direct'), 'cell-mono'); },
-		function(s) {
-			return '<div class="btn-group">'
-				+ '<button class="btn btn-sm" onclick="SignalActions.set(\'yk\',\'' + esc(s.saddr) + '\')">' + Icon.get('edit') + ' ' + I18n.t('signal.set') + '</button>'
-				+ '<button class="btn btn-danger btn-sm" onclick="SignalActions.del(\'yk\',\'' + esc(s.saddr) + '\')">' + Icon.get('trash') + '</button>'
-				+ '</div>';
-		}
-	);
+	c.innerHTML = renderSignalPage('yk', false, I18n.t('signal.ctrl'), function(s) {
+		return '<td class="cell-mono">' + (s.ctrl_type == 1 ? I18n.t('signal.ctrl_sbo') : I18n.t('signal.ctrl_direct')) + '</td>';
+	});
 });
 
-/* ---- AO ---- */
+/* ---- AO: 模拟输出 (带控制类型列) ---- */
 Router.register('#ao', function(c) {
-	c.innerHTML = renderSignalPage('ao',
-		[I18n.t('signal.saddr'), I18n.t('signal.desc'), I18n.t('signal.type'), I18n.t('signal.ctrl')],
-		function(s) { return td(esc(s.type || '?'), 'cell-mono') + td(s.ctrl_type == 1 ? I18n.t('signal.ctrl_sbo') : I18n.t('signal.ctrl_direct'), 'cell-mono'); },
-		function(s) {
-			return '<div class="btn-group">'
-				+ '<button class="btn btn-sm" onclick="SignalActions.set(\'ao\',\'' + esc(s.saddr) + '\')">' + Icon.get('edit') + ' ' + I18n.t('signal.set') + '</button>'
-				+ '<button class="btn btn-danger btn-sm" onclick="SignalActions.del(\'ao\',\'' + esc(s.saddr) + '\')">' + Icon.get('trash') + '</button>'
-				+ '</div>';
-		}
-	);
+	c.innerHTML = renderSignalPage('ao', false, I18n.t('signal.ctrl'), function(s) {
+		return '<td class="cell-mono">' + (s.ctrl_type == 1 ? I18n.t('signal.ctrl_sbo') : I18n.t('signal.ctrl_direct')) + '</td>';
+	});
 });
diff --git a/config/web/js/router.js b/config/web/js/router.js
index 4a5cc5f..5d9f267 100644
--- a/config/web/js/router.js
+++ b/config/web/js/router.js
@@ -37,16 +37,24 @@ var Router = {
 
 		if (hash === this.currentHash) return;
 		this.currentHash = hash;
-
 		updateNavActive(hash);
+		this._render(hash);
+	},
 
+	/**
+	 * @brief 强制重绘当前页面 (用于 WS 推送刷新, hash 不变)
+	 */
+	reload: function() {
+		if (this.currentHash) this._render(this.currentHash);
+	},
+
+	_render: function(hash) {
 		var page = this.pages[hash];
 		if (!page) { window.location.hash = '#dashboard'; return; }
 
 		var titleMap = {
 			'#dashboard': I18n.t('dash.title'),
 			'#out': I18n.t('nav.out'),
-			'#in': I18n.t('nav.in'),
 			'#yk': I18n.t('nav.yk'),
 			'#ao': I18n.t('nav.ao'),
 			'#param': I18n.t('nav.param'),
@@ -70,7 +78,6 @@ var Router = {
 var NAV = [
 	{ h: '#dashboard',  key: 'nav.dashboard',     icon: 'dashboard' },
 	{ h: '#out',        key: 'nav.out',           icon: 'signal',    section: 'signal_mgmt' },
-	{ h: '#in',         key: 'nav.in',            icon: 'link' },
 	{ h: '#yk',         key: 'nav.yk',            icon: 'zap' },
 	{ h: '#ao',         key: 'nav.ao',            icon: 'sliders' },
 	{ h: '#param',      key: 'nav.param',         icon: 'settings' },
diff --git a/config/web/js/signal-store.js b/config/web/js/signal-store.js
index 497948f..a6b2615 100644
--- a/config/web/js/signal-store.js
+++ b/config/web/js/signal-store.js
@@ -1,61 +1,84 @@
 /**
  * @file    signal-store.js
- * @brief   信号数据缓存 — 接收 WS 推送并更新内存 + localStorage 持久化
+ * @brief   信号数据缓存 — 纯内存, WS 推送驱动, 不持久化 + 增量 DOM 刷新
  */
 
-
 var SignalStore = {
-	data: { out: [], in: [], yk: [], ao: [], param: [] },
+	data: { out: [], yk: [], ao: [], param: [] },
 
 	/**
-	 * @brief 合并 WS 推送数据到缓存, 并持久化到 localStorage
-	 * @param {object} push  {out:[...], in:[...], ...}
+	 * @brief 合并 WS 推送数据 + 增量更新可见 DOM (不重刷整页)
 	 */
 	update: function(push) {
 		var self = this;
-		['out', 'in', 'yk', 'ao', 'param'].forEach(function(type) {
-			if (push[type])
-			{
-				var map = {};
-				self.data[type].forEach(function(s) { map[s.saddr] = s; });
-				push[type].forEach(function(s) { map[s.saddr] = s; });
-				self.data[type] = Object.keys(map).map(function(k) { return map[k]; });
-			}
+		['out', 'yk', 'ao', 'param'].forEach(function(type) {
+			if (!push[type]) return;
+			var map = {};
+			self.data[type].forEach(function(s) { map[s.saddr] = s; });
+			push[type].forEach(function(s) { map[s.saddr] = s; });
+			self.data[type] = Object.keys(map).map(function(k) { return map[k]; });
+
+			/* 增量更新可见页面 DOM (仅更新变化的单元格，不重绘整页) */
+			var tbody = document.getElementById('tbody-' + type);
+			if (!tbody) return;
+			push[type].forEach(function(s) {
+				var row = tbody.querySelector('tr[data-saddr="' + s.saddr.replace(/"/g, '\\"') + '"]');
+				if (!row) return;
+				/* 更新值列 (class=cell-val) */
+				var valCell = row.querySelector('.cell-val');
+				if (valCell && s.val !== undefined) {
+					var nv = (s.val === null || s.val === '') ? '—' : String(s.val);
+					if (valCell.textContent.trim() !== nv) {
+						valCell.textContent = nv;
+						valCell.classList.add('changed');
+						setTimeout(function() { valCell.classList.remove('changed'); }, 600);
+					}
+				}
+				/* 更新 ctrl_type 列 (YK/AO) */
+				if (s.ctrl_type !== undefined) {
+					var ctrlCell = row.querySelector('.cell-ctrl');
+					if (ctrlCell) {
+						var ct = (s.ctrl_type == 1) ? (I18n.t('signal.ctrl_sbo') || 'SBO') : (I18n.t('signal.ctrl_direct') || 'Direct');
+						if (ctrlCell.textContent.trim() !== ct) ctrlCell.textContent = ct;
+					}
+				}
+				/* Param: 更新定值区值 */
+				if (type === 'param' && s.setting_zone_list) {
+					s.setting_zone_list.forEach(function(z) {
+						var zoneInput = row.querySelector('.param-zone-val[data-zone="' + z.id + '"]');
+						if (zoneInput) {
+							var zv = z.val || '';
+							if (zoneInput.textContent !== zv) zoneInput.textContent = zv;
+						}
+					});
+				}
+			});
 		});
-		this._save();
+
+		/* PLC Debug 页增量刷新 */
+		if (typeof PlcDebugPage !== 'undefined' && PlcDebugPage.incrRefresh) {
+			PlcDebugPage.incrRefresh();
+		}
 	},
 
 	get: function(type) {
 		return this.data[type] || [];
 	},
 
-	addFromPush: function(type, item) {
-		this.data[type].push(item);
-		this._save();
-	},
-
+	/** @brief 删除信号 (内存 + 立即移除 DOM，不等后端确认) */
 	remove: function(type, saddr) {
 		this.data[type] = this.data[type].filter(function(s) { return s.saddr !== saddr; });
-		this._save();
+		/* 立即从页面移除对应行 */
+		var row = document.querySelector('#tbody-' + type + ' tr[data-saddr="' + saddr.replace(/"/g, '\\"') + '"]');
+		if (row) {
+			row.style.transition = 'opacity 0.2s';
+			row.style.opacity = '0';
+			setTimeout(function() { if (row.parentNode) row.parentNode.removeChild(row); }, 200);
+		}
 	},
 
-	/** @brief 从 localStorage 恢复缓存 */
-	restore: function() {
-		try {
-			var saved = localStorage.getItem('rtu_signals');
-			if (saved) {
-				var parsed = JSON.parse(saved);
-				if (parsed && parsed.out) { this.data = parsed; }
-			}
-		} catch (e) { /* ignore corrupt data */ }
-	},
-
-	/** @brief 持久化到 localStorage (debounced) */
-	_save: function() {
-		var self = this;
-		if (this._timer) clearTimeout(this._timer);
-		this._timer = setTimeout(function() {
-			try { localStorage.setItem('rtu_signals', JSON.stringify(self.data)); } catch (e) {}
-		}, 500);
+	/** @brief 清空所有缓存 (WebSocket 断连时调用) */
+	clear: function() {
+		this.data = { out: [], yk: [], ao: [], param: [] };
 	}
 };
diff --git a/src/public/libdatacenter/inc/dc_internal.h b/src/public/libdatacenter/inc/dc_internal.h
index e6c21b2..3e8395e 100644
--- a/src/public/libdatacenter/inc/dc_internal.h
+++ b/src/public/libdatacenter/inc/dc_internal.h
@@ -109,7 +109,6 @@ typedef struct
  * 全局变量声明
  * ================================================================ */
 extern dc_signal_map_t g_dc_out;
-extern dc_signal_map_t g_dc_in;
 extern dc_signal_map_t g_dc_yk;
 extern dc_signal_map_t g_dc_ao;
 extern dc_signal_map_t g_dc_param;
@@ -135,7 +134,6 @@ extern std::unordered_map<std::string, dc_param_meta_t> g_param_metadata;
 int          dc_core_add(dc_signal_t &signal, dc_signal_map_t &smap);
 dc_signal_t *dc_core_find(const char *saddr, dc_signal_map_t &smap);
 dc_signal_t *dc_core_find_out(const char *saddr);
-dc_signal_t *dc_core_find_in(const char *saddr);
 dc_signal_t *dc_core_find_by_id(uint32_t id, dc_signal_map_t &smap);
 void         dc_core_mark_dirty(dc_signal_t *p_signal);
 
diff --git a/src/public/libdatacenter/inc/myDatacenter.h b/src/public/libdatacenter/inc/myDatacenter.h
index 671607d..d3f6c4f 100644
--- a/src/public/libdatacenter/inc/myDatacenter.h
+++ b/src/public/libdatacenter/inc/myDatacenter.h
@@ -245,25 +245,6 @@ int dc_signal_out_link_with_callback(const char *saddr, void **p_data,
 int dc_set_out_signal_val(const char *saddr, const void *set_data,
                           const char *module_id);
 
-/* ==================================================================
- * In 信号注册（输入信号，链接到 out 信号的数据指针）
- * ================================================================== */
-
-/**
- * @brief 注册输入信号并链接到输出信号
- * @param link_saddr 要链接的 out 信号地址
- * @param p_data     输出：被链接 out 信号的数据指针
- */
-int dc_signal_in(const char *saddr, const char *desc,
-                 const char *link_saddr, void **p_data, const char *module_id);
-
-/**
- * @brief 注册输入信号并绑定回调（回调挂在被链接的 out 信号上）
- */
-int dc_signal_in_with_callback(const char *saddr, const char *desc,
-                                const char *link_saddr, void **p_data,
-                                dc_out_change_cb_t cb, const char *module_id);
-
 /* ==================================================================
  * YK 信号（遥控）
  * ================================================================== */
@@ -419,10 +400,6 @@ int dc_param_register_exec_cb(const char *saddr, dc_async_exec_cb_t exec_cb,
 int dc_get_out_signal_info(const char *saddr, char *desc, int desc_len,
                            uint8_t *data_type, void **p_data);
 
-/** @brief 查询 in 信号信息 */
-int dc_get_in_signal_info(const char *saddr, char *desc, int desc_len,
-                          uint8_t *data_type, void **p_data);
-
 /** @brief 查询 AO 信号信息（含参数元数据） */
 int dc_get_ao_signal_info(const char *saddr, char *desc, int desc_len,
                           uint8_t *data_type, dc_param_meta_t *p_meta,
diff --git a/src/public/libdatacenter/src/dc_core.cpp b/src/public/libdatacenter/src/dc_core.cpp
index bf62d78..6d7faab 100644
--- a/src/public/libdatacenter/src/dc_core.cpp
+++ b/src/public/libdatacenter/src/dc_core.cpp
@@ -2,7 +2,6 @@
 #include "dc_internal.h"
 
 dc_signal_map_t g_dc_out = {};
-dc_signal_map_t g_dc_in = {};
 dc_signal_map_t g_dc_yk = {};
 dc_signal_map_t g_dc_ao = {};
 dc_signal_map_t g_dc_param = {};
@@ -100,12 +99,6 @@ dc_signal_t *dc_core_find_out(const char *saddr)
     return dc_core_find(saddr, g_dc_out);
 }
 
-/** @brief 快捷查找 in 信号 */
-dc_signal_t *dc_core_find_in(const char *saddr)
-{
-    return dc_core_find(saddr, g_dc_in);
-}
-
 /** @brief 按 ID 查找信号（O(1)） */
 dc_signal_t *dc_core_find_by_id(uint32_t id, dc_signal_map_t &smap)
 {
diff --git a/src/public/libdatacenter/src/dc_signal_in.cpp b/src/public/libdatacenter/src/dc_signal_in.cpp
deleted file mode 100644
index a93828a..0000000
--- a/src/public/libdatacenter/src/dc_signal_in.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-/** @file dc_signal_in.cpp — In 信号注册 */
-#include "dc_internal.h"
-
-/** @brief In 信号注册内部实现：关联 out 信号、建立链接、追加回调 */
-static int dc_in_register_impl(const char *saddr, const char *desc, const char *link_saddr, void **p_data, dc_out_change_cb_t cb, const char *module_id)
-{
-    if (!g_initialized || !saddr || !link_saddr || !p_data || !module_id)
-    {
-        return DC_ERR_PARAM;
-    }
-
-    if (!link_saddr[0])
-    {
-        return DC_ERR_PARAM;
-    }
-
-    if (dc_core_find_in(saddr))
-    {
-        LOG_E("in %s exists\n", saddr);
-
-        return DC_ERR_EXISTS;
-    }
-
-    dc_signal_t *ps_out = dc_core_find_out(link_saddr);
-
-    if (!ps_out)
-    {
-        LOG_E("link out %s not found\n", link_saddr);
-
-        return DC_ERR_NOTFOUND;
-    }
-
-    *p_data = ps_out->vec_p_data[0];
-
-    dc_signal_t sig = {};
-
-    sig.hash = XXH3_128bits(saddr, strlen(saddr));
-    strncpy(sig.saddr, saddr, DC_SADDR_MAX_LEN - 1);
-
-    if (desc)
-    {
-        strncpy(sig.desc, desc, DC_DESC_MAX_LEN - 1);
-    }
-
-    sig.data_type = ps_out->data_type;
-    strncpy(sig.link_saddr, link_saddr, DC_SADDR_MAX_LEN - 1);
-    sig.vec_p_data = (void **)malloc(sizeof(void *));
-    sig.vec_p_data[0] = *p_data;
-    sig.vec_p_data_count = 1;
-
-    /* out 记录 in 的链接 */
-    char **nl = (char **)realloc(ps_out->link_saddrs, (ps_out->link_count + 1) * sizeof(char *));
-
-    nl[ps_out->link_count] = strdup(saddr);
-    ps_out->link_saddrs = nl;
-    ps_out->link_count++;
-
-    if (cb && ps_out->cb_count < DC_MAX_CALLBACKS)
-    {
-        strncpy(ps_out->cb_list[ps_out->cb_count].module_id, module_id, DC_MODULE_MAX_LEN - 1);
-        ps_out->cb_list[ps_out->cb_count].out_cb = cb;
-        ps_out->cb_count++;
-    }
-
-    return dc_core_add(sig, g_dc_in);
-}
-
-/** @brief 注册 in 信号（链接到 out，无回调） */
-int dc_signal_in(const char *saddr, const char *desc, const char *link_saddr, void **p_data, const char *module_id)
-{
-    return dc_in_register_impl(saddr, desc, link_saddr, p_data, NULL, module_id);
-}
-
-/** @brief 注册 in 信号（链接到 out，带变更回调） */
-int dc_signal_in_with_callback(const char *saddr, const char *desc, const char *link_saddr, void **p_data, dc_out_change_cb_t cb, const char *module_id)
-{
-    return dc_in_register_impl(saddr, desc, link_saddr, p_data, cb, module_id);
-}
-
diff --git a/src/public/libdatacenter/src/dc_signal_query.cpp b/src/public/libdatacenter/src/dc_signal_query.cpp
index 049926a..bf29ebe 100644
--- a/src/public/libdatacenter/src/dc_signal_query.cpp
+++ b/src/public/libdatacenter/src/dc_signal_query.cpp
@@ -43,13 +43,6 @@ int dc_get_out_signal_info(const char *saddr, char *desc, int desc_len,
     return dc_query_info(&g_dc_out, saddr, desc, desc_len, data_type, p_data);
 }
 
-/** @brief 查询 in 信号信息 */
-int dc_get_in_signal_info(const char *saddr, char *desc, int desc_len,
-    uint8_t *data_type, void **p_data)
-{
-    return dc_query_info(&g_dc_in, saddr, desc, desc_len, data_type, p_data);
-}
-
 /** @brief 查询 AO 信号信息（含参数元数据和控型） */
 int dc_get_ao_signal_info(const char *saddr, char *desc, int desc_len,
     uint8_t *data_type, dc_param_meta_t *p_meta, uint8_t *ctrl_type,
@@ -220,10 +213,6 @@ int dc_get_signal_count(const char *type_str)
         {
             pmap = &g_dc_out;
         }
-        else if (0 == strcmp(type_str, "in"))
-        {
-            pmap = &g_dc_in;
-        }
         else if (0 == strcmp(type_str, "yk"))
         {
             pmap = &g_dc_yk;
@@ -263,10 +252,6 @@ int dc_get_signal_info_by_id(const char *type_str, uint32_t id,
     {
         pmap = &g_dc_out;
     }
-    else if (0 == strcmp(type_str, "in"))
-    {
-        pmap = &g_dc_in;
-    }
     else if (0 == strcmp(type_str, "yk"))
     {
         pmap = &g_dc_yk;
diff --git a/src/public/libdatacenter/src/dc_signal_show.cpp b/src/public/libdatacenter/src/dc_signal_show.cpp
index 0c427d6..eabd68b 100644
--- a/src/public/libdatacenter/src/dc_signal_show.cpp
+++ b/src/public/libdatacenter/src/dc_signal_show.cpp
@@ -99,11 +99,6 @@ static void cmd_dc_func(int argc, char *argv[])
         printf("out signals:\n");
         dc_show_signals(g_dc_out);
     }
-    else if (0 == strcmp(argv[1], "in"))
-    {
-        printf("in signals:\n");
-        dc_show_signals(g_dc_in);
-    }
     else if (0 == strcmp(argv[1], "yk"))
     {
         printf("yk signals:\n");
@@ -123,8 +118,6 @@ static void cmd_dc_func(int argc, char *argv[])
     {
         printf("out signals:\n");
         dc_show_signals(g_dc_out);
-        printf("in signals:\n");
-        dc_show_signals(g_dc_in);
         printf("yk signals:\n");
         dc_show_signals(g_dc_yk);
         printf("ao signals:\n");
diff --git a/src/system/libplc/src/plc.cpp b/src/system/libplc/src/plc.cpp
index 18cf15a..53335da 100644
--- a/src/system/libplc/src/plc.cpp
+++ b/src/system/libplc/src/plc.cpp
@@ -13,7 +13,7 @@
  *          - Kahn 拓扑排序 (保证节点按依赖顺序执行, 检测环路)
  *          - 非阻塞定时器 (clock_gettime CLOCK_MONOTONIC)
  *          - mtime 文件变化检测 (stat, 仅在 XML 更新时重新解析)
- *          - 与 self_ptl 遥信联动 (dc_signal_in 链接到 self_ptl 配置的遥信信号)
+ *          - 与 self_ptl 遥信联动 (dc_signal_out_link_with_callback 链接到 self_ptl 配置的遥信信号)
  *          - 经 datacenter 写入 out 信号 (dc_set_out_signal_val)
  *
  *          线程模型: X-Macro 框架 app_plc 线程, EV_TIMER3(1s) 触发 PLC_Logic()
@@ -1788,20 +1788,16 @@ int app_plc_init1(void *arg)
 int app_plc_init2(void *arg)
 {
     int ret = 0;
-    ret |= dc_signal_in("plc.run_cnt_in", "plc.run_cnt_in", "plc.run_cnt", (void **)&gp_run_cnt_in, "plc");
+    ret |= dc_signal_out_link_with_callback("plc.run_cnt", (void **)&gp_run_cnt_in, NULL, "plc");
 
     for (uint32_t i = 0; i < g_plc_cfg.size(); i++)
     {
         stru_plc_cfg *p = &g_plc_cfg[i];
-        char saddr[64];
-        char desc[64];
-        snprintf(saddr, sizeof(saddr), "plc.st.in.%d", i);
-        snprintf(desc, sizeof(desc), "plc链接遥信%d", i);
-        ret |= dc_signal_in(saddr, desc, p->base.saddr.c_str(), (void **)&p->p_data, "plc");
+        ret |= dc_signal_out_link_with_callback(p->base.saddr.c_str(), (void **)&p->p_data, NULL, "plc");
     }
     if (ret != 0)
     {
-        LOG_E("app_plc_init2 dc_signal_in failed");
+        LOG_E("app_plc_init2 dc_signal_out_link_with_callback failed");
         return -1;
     }
     return 0;
diff --git a/src/system/libweb_server/inc/web_server.h b/src/system/libweb_server/inc/web_server.h
index f5d6892..c78f35d 100644
--- a/src/system/libweb_server/inc/web_server.h
+++ b/src/system/libweb_server/inc/web_server.h
@@ -7,7 +7,7 @@
  *          功能:
  *          - HTTP 静态文件服务（packed_fs 内嵌前端）
  *          - WebSocket 信号实时推送（增量更新）
- *          - 5 种信号类型增删改查（out/in/yk/ao/param）
+ *          - 4 种信号类型增删改查（out/yk/ao/param）
  *          - 远程命令执行（捕获 stdout 回传）
  *          - 文件上传/下载
  *          - 异步命令输出通道
@@ -29,10 +29,9 @@ extern "C"
 typedef enum
 {
     WS_SIG_OUT = 0,
-    WS_SIG_IN,
-    WS_SIG_YK,
-    WS_SIG_AO,
-    WS_SIG_PARAM,
+    WS_SIG_YK  = 1,
+    WS_SIG_AO  = 2,
+    WS_SIG_PARAM = 3,
     WS_SIG_MAX
 } enum_ws_sig_type;
 
diff --git a/src/system/libweb_server/src/ws_method.cpp b/src/system/libweb_server/src/ws_method.cpp
index 7318bed..351b8ca 100644
--- a/src/system/libweb_server/src/ws_method.cpp
+++ b/src/system/libweb_server/src/ws_method.cpp
@@ -42,6 +42,9 @@ typedef struct
 static std::map<unsigned long, stru_ws_session> g_ws_sessions;
 static pthread_mutex_t g_ws_session_mutex = PTHREAD_MUTEX_INITIALIZER;
 
+/* WebSocket 收发包日志开关（默认关闭，通过 web_log on/off 控制） */
+static int g_ws_rx_log = 0;
+
 /* ---- 前向声明 ---- */
 static int  ws_make_sig_json(stru_ws_session *s, cJSON *root, enum_ws_sig_type st, bool *has_change);
 static void ws_sig_add(stru_ws_session *s, enum_ws_sig_type st, const char *saddr);
@@ -52,7 +55,7 @@ static int  ws_sig_set(stru_ws_session *s, enum_ws_sig_type st, const char *sadd
 /* ---- 函数表: 信号类型 → 名称 ---- */
 static const char *g_ws_sig_names[WS_SIG_MAX] =
 {
-    "out", "in", "yk", "ao", "param"
+    "out", "yk", "ao", "param"
 };
 
 /* ================================================================
@@ -112,33 +115,6 @@ static void ws_sig_add_out(stru_ws_session *s, const char *saddr)
     vec.push_back(sig);
 }
 
-static void ws_sig_add_in(stru_ws_session *s, const char *saddr)
-{
-    std::vector<stru_ws_sig> &vec = s->signals[WS_SIG_IN];
-    void *p_data = NULL;
-
-    if (ws_sig_find_idx(vec, saddr) >= 0)
-    {
-        return;
-    }
-
-    stru_ws_sig sig;
-    sig.saddr   = saddr;
-
-    char desc[128] = {0};
-
-    if (0 != dc_get_in_signal_info(saddr, desc, sizeof(desc), &sig.data_type, &p_data))
-    {
-        LOG_E("dc_get_in_signal_info failed: %s", saddr);
-
-        return;
-    }
-
-    sig.desc = desc;
-    sig.vec_p_data.push_back(p_data);
-    vec.push_back(sig);
-}
-
 static void ws_sig_add_yk(stru_ws_session *s, const char *saddr)
 {
     std::vector<stru_ws_sig> &vec = s->signals[WS_SIG_YK];
@@ -231,7 +207,6 @@ static void ws_sig_add(stru_ws_session *s, enum_ws_sig_type st, const char *sadd
     switch (st)
     {
         case WS_SIG_OUT:   ws_sig_add_out(s, saddr);   break;
-        case WS_SIG_IN:    ws_sig_add_in(s, saddr);    break;
         case WS_SIG_YK:    ws_sig_add_yk(s, saddr);    break;
         case WS_SIG_AO:    ws_sig_add_ao(s, saddr);    break;
         case WS_SIG_PARAM: ws_sig_add_param(s, saddr); break;
@@ -274,12 +249,6 @@ static int ws_sig_set(stru_ws_session *s, enum_ws_sig_type st, const char *saddr
             case WS_SIG_OUT:
                 return dc_set_out_signal_val(saddr, data, MODULE_WEB_SERVER);
 
-            case WS_SIG_IN:
-                /* in 信号只读 */
-                LOG_E("set in signal not supported: %s", saddr);
-
-                return -1;
-
             case WS_SIG_YK:
             {
                 dc_ctrl_t ctrl;
@@ -483,6 +452,18 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
         return;
     }
 
+    {
+        char buf[256] = {0};
+        int copy_len = (int)rx_len < 255 ? (int)rx_len : 255;
+        memcpy(buf, p_rx, (size_t)copy_len);
+        buf[copy_len] = '\0';
+
+        if (g_ws_rx_log)
+        {
+            LOG_I("WS recv %uB: %s", rx_len, buf);
+        }
+    }
+
     cJSON *root = cJSON_Parse(p_rx);
 
     if (!root)
@@ -529,13 +510,12 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
                     }
 
                     /* 构建信号元数据 JSON */
-                    const char *dc_types[5];
+                    const char *dc_types[4];
                     int dc_type_count = 0;
 
                     if (0 == strcmp(sub, "all") || 0 == strncmp(sub, "all ", 4))
                     {
                         dc_types[dc_type_count++] = "out";
-                        dc_types[dc_type_count++] = "in";
                         dc_types[dc_type_count++] = "yk";
                         dc_types[dc_type_count++] = "ao";
                         dc_types[dc_type_count++] = "param";
@@ -544,10 +524,6 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
                     {
                         dc_types[dc_type_count++] = "out";
                     }
-                    else if (0 == strcmp(sub, "in")  || 0 == strncmp(sub, "in ", 3))
-                    {
-                        dc_types[dc_type_count++] = "in";
-                    }
                     else if (0 == strcmp(sub, "yk")  || 0 == strncmp(sub, "yk ", 3))
                     {
                         dc_types[dc_type_count++] = "yk";
@@ -564,7 +540,6 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
                     {
                         /* 默认返回全部 */
                         dc_types[dc_type_count++] = "out";
-                        dc_types[dc_type_count++] = "in";
                         dc_types[dc_type_count++] = "yk";
                         dc_types[dc_type_count++] = "ao";
                         dc_types[dc_type_count++] = "param";
@@ -614,7 +589,7 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
 
                     if (dc_tx)
                     {
-                        ws_send_binary(c->id, dc_tx, strlen(dc_tx));
+                        ws_send_one(c->id, dc_tx, strlen(dc_tx));
                         free(dc_tx);
                     }
 
@@ -682,7 +657,7 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
 
                     if (0 == func_proc_self_dir(proc_dir, sizeof(proc_dir)))
                     {
-                        snprintf(resolved, sizeof(resolved), "%s%s", proc_dir, jpath->valuestring);
+                        snprintf(resolved, sizeof(resolved), "%s/%s", proc_dir, jpath->valuestring);
                     }
                     else
                     {
@@ -753,7 +728,7 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
 
                     if (0 == func_proc_self_dir(proc_dir, sizeof(proc_dir)))
                     {
-                        snprintf(resolved, sizeof(resolved), "%s%s", proc_dir, jpath->valuestring);
+                        snprintf(resolved, sizeof(resolved), "%s/%s", proc_dir, jpath->valuestring);
                     }
                     else
                     {
@@ -838,6 +813,7 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
 
     if (0 == strcmp(curd, "add"))
     {
+        if (g_ws_rx_log) LOG_I("WS add %s %s", g_ws_sig_names[st], saddr);
         ws_sig_add(&sess, st, saddr);
 
         /* 立即推送当前状态 */
@@ -858,6 +834,7 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
     }
     else if (0 == strcmp(curd, "del"))
     {
+        if (g_ws_rx_log) LOG_I("WS del %s %s", g_ws_sig_names[st], saddr);
         ws_sig_del(&sess, st, saddr);
 
         cJSON *push = cJSON_CreateObject();
@@ -877,6 +854,7 @@ void ws_recv(struct mg_connection *c, const char *p_rx, uint16_t rx_len)
     }
     else if (0 == strcmp(curd, "set"))
     {
+        if (g_ws_rx_log) LOG_I("WS set %s %s = %s (zone=%u)", g_ws_sig_names[st], saddr, sig_data, zone);
         ws_sig_set(&sess, st, saddr, zone, sig_data);
     }
 
@@ -897,3 +875,50 @@ void ws_session_destroy(struct mg_connection *c)
     g_ws_sessions.erase(c->id);
     pthread_mutex_unlock(&g_ws_session_mutex);
 }
+
+/* ================================================================
+ * web_log 命令 — 控制 WebSocket 收发包日志
+ * ================================================================ */
+
+/** @brief web_log 命令补全 */
+LOCAL void cmd_web_log_complete(const char *buf, char ***completions, int *ncomp)
+{
+    static const char *subs[] = {"on", "off", "status"};
+    cmd_sub_complete(buf, completions, ncomp, subs, sizeof(subs) / sizeof(subs[0]));
+}
+
+/** @brief web_log 命令处理 */
+LOCAL void cmd_web_log(int argc, char *argv[])
+{
+    const char *usage =
+        "web_log on     打开 WS 收发包日志\n"
+        "web_log off    关闭 WS 收发包日志\n"
+        "web_log status 查看当前状态\n";
+
+    if (argc < 2)
+    {
+        printf("%s", usage);
+        return;
+    }
+
+    if (0 == strcmp(argv[1], "on"))
+    {
+        g_ws_rx_log = 1;
+        printf("WS log: ON\n");
+    }
+    else if (0 == strcmp(argv[1], "off"))
+    {
+        g_ws_rx_log = 0;
+        printf("WS log: OFF\n");
+    }
+    else if (0 == strcmp(argv[1], "status"))
+    {
+        printf("WS log: %s\n", g_ws_rx_log ? "ON" : "OFF");
+    }
+    else
+    {
+        printf("未知子命令: %s\n%s", argv[1], usage);
+    }
+}
+
+CMD_REGISTER_C("web_log", cmd_web_log, "WebSocket 收发包日志开关", cmd_web_log_complete);
diff --git a/src/test/test_datacenter.cpp b/src/test/test_datacenter.cpp
index e4fdba5..f445ccd 100644
--- a/src/test/test_datacenter.cpp
+++ b/src/test/test_datacenter.cpp
@@ -230,44 +230,6 @@ static void test_out_signal(void)
     }
 }
 
-/**
- * @brief 测试 3：in 信号注册
- */
-static void test_in_signal(void)
-{
-    TEST("dc_signal_in()");
-    {
-        void *p = NULL;
-        int r = dc_signal_in("RPC1:YC:1:in", "test in", "RPC1:YC:1",
-                             &p, "protocol");
-
-        if (DC_OK != r || !p)
-        {
-            FAIL("in register failed");
-
-            return;
-        }
-
-        OK();
-    }
-
-    TEST("dc_signal_in() bad link");
-    {
-        void *p = NULL;
-        int r = dc_signal_in("RPC1:YC:99:in", "bad", "RPC1:YC:99",
-                             &p, "protocol");
-
-        if (DC_ERR_NOTFOUND != r)
-        {
-            FAIL("bad link should return NOTFOUND");
-
-            return;
-        }
-
-        OK();
-    }
-}
-
 /**
  * @brief 测试 4：yk 信号 + 同步控制
  */
@@ -862,7 +824,6 @@ int main(void)
 
     /* 信号注册 */
     test_out_signal();
-    test_in_signal();
     test_yk_signal();
     test_ao_signal();
     test_param_signal();